CVE-2026-11531: SQL Injection in imvks786 Student Management System Admin Login

Technical summary

CVE-2026-11531 is a SQL injection vulnerability (CWE-89) arising from improper neutralization of special elements used in an SQL command (CWE-74). The vulnerability exists in the Administrator Login Endpoint at admin/admin_login.php, where user-supplied input for the a_usr and a_pwd parameters is not properly sanitized before being incorporated into database queries. The affected codebase is imvks786/student_management_system up to commit 9599b560ad3c3b83e75d328b76bedcd489ef1f46. Due to the project's rolling release model, specific version numbers are not available. The CVSS v3.1 score of 7.3 (HIGH) reflects the network-accessible nature of the endpoint combined with its authentication bypass potential.

Business impact

This vulnerability poses a significant risk to organizations deploying the student management system, particularly educational institutions. A successful exploitation could allow attackers to bypass administrator authentication, modify student records, access confidential academic and personal data, or insert malicious content into the system. The public availability of exploit code substantially elevates operational risk. Administrative compromise of an educational system could disrupt operations, trigger regulatory reporting obligations under FERPA or similar data protection laws, and damage institutional reputation.

Affected systems

The imvks786 student_management_system project is affected up to commit 9599b560ad3c3b83e75d328b76bedcd489ef1f46. The project uses a rolling release strategy, making it difficult to map traditional version numbers. Deployments of this system—whether in test, staging, or production environments—should be considered potentially affected unless they have explicitly incorporated a patched commit after the vulnerable baseline. The vulnerability is in the web-facing administrator login interface, making any internet-connected or intranet-accessible instance a potential attack surface.

Exploitability

Exploitability is high. The vulnerability requires no authentication or user interaction, is remotely exploitable over the network (AV:N), and presents a low attack complexity (AC:L). Public exploit code is already in circulation. An attacker can craft HTTP requests to the admin/admin_login.php endpoint with malicious SQL payloads in the a_usr or a_pwd parameters to bypass authentication or extract data directly. Organizations should assume active exploitation is occurring or will occur soon.

Remediation

Update the imvks786 student_management_system to a commit that resolves the SQL injection vulnerability. Because the project follows a rolling release model, consult the official repository for the latest stable commit or branch that patches CWE-89 SQL injection issues. Implement prepared statements and parameterized queries for all database interactions in the login endpoint. Additionally, apply input validation and whitelisting on the a_usr and a_pwd parameters to reject or sanitize special SQL characters. Consider implementing Web Application Firewall (WAF) rules to block common SQL injection patterns as a temporary compensating control.

Patch guidance

The imvks786 project has not yet issued a formal response to the vulnerability report despite early notification. Monitor the official repository for commits that address SQL injection in admin/admin_login.php. Verify any update against the vendor advisory or commit changelog to confirm it remediates CWE-89. Test patched versions in a non-production environment before deployment. Given the rolling release model, track the repository's main or stable branch for security-related updates. If no official patch is forthcoming within a reasonable timeframe, consider forking the project to apply your own fixes or transitioning to an actively maintained alternative.

Detection guidance

Monitor web server and application logs for HTTP requests to admin/admin_login.php containing SQL metacharacters (e.g., single quotes, double dashes, UNION, SELECT) in the a_usr or a_pwd parameters. Look for patterns such as ' OR '1'='1, admin'-- , or UNION-based payloads. Implement WAF rules to detect and block SQL injection attempts targeting login endpoints. Database query logs may reveal unusual or repeated failed queries. Consider deploying an intrusion detection system (IDS) to identify network-level signatures associated with SQLi exploitation attempts. Set alerts for multiple failed login attempts followed by successful authentication within short timeframes.

Why prioritize this

This vulnerability merits immediate attention due to its HIGH CVSS score (7.3), public exploit availability, remote exploitability without authentication, and direct impact on administrator authentication. The potential for credential bypass and data exfiltration in an educational system compounds the risk. The vendor's lack of response despite early notification creates uncertainty around patch timelines. Organizations should treat this as a critical-to-urgent priority depending on whether the vulnerable system is internet-facing or internal only.

Risk score, explained

The CVSS v3.1 score of 7.3 (HIGH) reflects: network accessibility (AV:N) allowing remote attack from any location; low attack complexity (AC:L) requiring minimal technical sophistication; no authentication required (PR:N); and impact across confidentiality, integrity, and availability (C:L/I:L/A:L). The score does not account for the amplifying factor of public exploit availability or the critical nature of the affected component (administrator authentication). In practice, organizations should rate this higher than the base CVSS score suggests due to exploitation prevalence and blast radius.

Frequently asked questions